villebro commented on a change in pull request #9107: feat: add rolling window
support to 'Big Number with Trendline' viz
URL:
https://github.com/apache/incubator-superset/pull/9107#discussion_r389347683
##########
File path: superset/viz.py
##########
@@ -178,6 +178,26 @@ def run_extra_queries(self):
"""
pass
+ def apply_rolling(self, df):
+ fd = self.form_data
+ rolling_type = fd.get("rolling_type")
+ rolling_periods = int(fd.get("rolling_periods") or 0)
+ min_periods = int(fd.get("min_periods") or 0)
+
+ if rolling_type in ("mean", "std", "sum") and rolling_periods:
+ kwargs = dict(window=rolling_periods, min_periods=min_periods)
+ if rolling_type == "mean":
+ df = df.rolling(**kwargs).mean()
+ elif rolling_type == "std":
+ df = df.rolling(**kwargs).std()
+ elif rolling_type == "sum":
+ df = df.rolling(**kwargs).sum()
+ elif rolling_type == "cumsum":
+ df = df.cumsum()
+ if min_periods:
+ df = df[min_periods:]
+ return df
Review comment:
👍
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